dmaengine: Remove redundant initialization of variable err

The variable err is being initialized with a value that is never read, it
is being updated later on. The assignment is redundant and can be removed
and move the declaration into the local scope.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20211015123447.27560-1-colin.king@canonical.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index af3ee28..d9f7c09 100644 (file)
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -695,13 +695,12 @@ static struct dma_chan *find_candidate(struct dma_device *device,
  */
 struct dma_chan *dma_get_slave_channel(struct dma_chan *chan)
 {
-       int err = -EBUSY;
-
        /* lock against __dma_request_channel */
        mutex_lock(&dma_list_mutex);
 
        if (chan->client_count == 0) {
                struct dma_device *device = chan->device;
+               int err;
 
                dma_cap_set(DMA_PRIVATE, device->cap_mask);
                device->privatecnt++;